Jeju weather in May
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Jeju May weather at a glance
In May, Jeju averages 18.1°C, with typical highs of 21.1°C and lows of 15°C. The historical average is 10 wet days and 75% humidity.
Jeju May temperature & humidity
Jeju May rain & wet days
Pack a compact umbrella. Keep an indoor stop available between outdoor activities.
What to wear in Jeju in May
T-shirts or long sleeves with one light outer layer should be comfortable. Showers are possible, so a compact umbrella is useful.
- DaytimeLong sleeves and a light jacket · average high 21.1°C
- Morning & eveningLong sleeves with a jacket or cardigan · average low 15°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Jeju May sunrise & sunset times
2026 May · Local time (Asia/Seoul)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-05-01 | 05:46 | 19:17 | 13h 30m |
| 2026-05-15 | 05:34 | 19:27 | 13h 53m |
| 2026-05-31 | 05:25 | 19:38 | 14h 13m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
Jeju travel updates
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Today’s weather and forecast
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Best months to visit Jeju
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
May weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Jeju weather like in May?
In May, Jeju averages 18.1°C, with typical highs of 21.1°C and lows of 15°C. The historical average is 10 wet days and 75% humidity. Our weather-comfort rating for this month is good.
Does it rain a lot in Jeju in May?
There are about 10 wet days in May. A compact umbrella is still useful.
What should I wear in Jeju in May?
T-shirts or long sleeves with one light outer layer should be comfortable. Showers are possible, so a compact umbrella is useful.
What are the best months to visit Jeju?
Recent weather data rates May among the more comfortable months.
Where can I check Jeju weather in May in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Jeju in May?
On 2026-05-15, calculated sunrise is 05:34 and sunset is 19:27 in local time (Asia/Seoul). Times vary by date and terrain.
Jeju weather by month
More South Korea destinations in May
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations